<p>Are you sure that you want to delete
    '' category?
</p>
<form action="<?php echo $this->url(array('action'=>'delete')); ?>" method="post">
    <div>
        <input type="hidden" name="id" value="" />
        <input type="submit" name="del" value="yes" />
        <input type="submit" name="del" value="no" />
    </div>
</form>